One possible plot could be that Harry and Fleur end up living together due to some post - war arrangements. They might initially have a bit of a cultural clash as Fleur is part - Veela and has her own French - influenced ways, while Harry is very much a product of the British wizarding world. But over time, they learn from each other and become friends. Harry could be teaching Fleur about some of the more unique aspects of Hogwarts' history that she might not know, and Fleur could be showing Harry some of the beautiful magic she learned in Beauxbatons.
The plot could involve Harry and Fleur living together as part of a secret magical protection program. They have to pretend to be a couple to deceive some dark forces that are after Harry. As they act the part, they gradually develop real feelings for each other. Fleur helps Harry deal with his PTSD from the war, and Harry helps Fleur with her family issues. Along the way, they face many challenges like dealing with nosy neighbors in the wizarding community and fending off attacks from the remaining Death Eaters.
It's also likely that Harry, having faced so much darkness, decides to take a break from the wizarding world for a while. Fleur, on the other hand, is still very much involved in the magical community. She might persuade Harry to come back and they start to explore different magical cultures together. They could travel to far - flung places, discover new spells and magical creatures, and in the process, their relationship blossoms.
It could be that they leave to attend a special magical training that is only available in a very secluded place. They might have received an invitation from a very powerful and reclusive wizard. This training could enhance their magical abilities in ways that Hogwarts or Beauxbatons couldn't. They see this as an opportunity to become stronger and more self - reliant, so they leave together, excited for the new challenges and knowledge that awaits them.
One possible plot could be that Fleur has been influenced by some dark magic or a powerful enemy. Maybe she's being blackmailed to kidnap Harry. She might take him to a hidden location, perhaps an old, abandoned castle. Then, the story could revolve around Harry trying to figure out why Fleur did this and how to escape while also dealing with Fleur's internal struggle about what she's done.
At first, their relationship might be a bit strained. Harry is used to his own space and friends, and Fleur has her own circle. But as they live together, they'll start to respect each other's differences. For example, Fleur might be more flamboyant in her magic use, while Harry is more practical. They'll start to see the value in each other's approaches and become closer friends.
In this fanfiction, the vampire could be an old acquaintance of Fleur from her Beauxbatons days. He was once a student there who got turned into a vampire later. Harry gets involved when he notices some strange happenings around Fleur. The three of them then get caught up in a mystery that involves a powerful dark magic item. They must work together, with Harry using his Gryffindor courage, Fleur her Veela charm, and the vampire his immortality - related skills to solve the mystery and keep the item from falling into the wrong hands.
One possible plot could be that they meet secretly in the Forbidden Forest. Fleur might be drawn to Harry's courage and Harry could be intrigued by Fleur's beauty and unique charm. They start sharing their secrets, like Harry telling Fleur about his struggles with Voldemort that he doesn't share with others. Their relationship grows as they find solace in each other's company away from the prying eyes of Hogwarts and the wizarding world.
Perhaps in the fanfiction, there is some sort of magic gone wrong. Harry and Fleur are caught in a magical spell that makes them act out of character. This leads to their relationship becoming more intimate than expected and Fleur getting pregnant. The rest of the story might be about them trying to reverse the spell while also coming to terms with the pregnancy.
One possible plot could be that Harry and Fleur's pregnancy is a result of a magical accident during a joint mission. They initially struggle with the news, as they have different worlds and cultures. Harry is from the wizarding world of Britain and Fleur is from France. But as the pregnancy progresses, they start to discover new things about each other and their respective heritages, and they come together to prepare for the arrival of their child. They might face opposition from some quarters who think their union is strange, but they overcome all odds with their love for each other and the future of their family.
Well, perhaps they run away because of a misunderstanding within the wizarding community. Harry and Fleur might have been wrongly accused of something, like stealing a powerful magical artifact. So they decide to flee and clear their names on their own terms. They journey through different magical lands, encountering various magical creatures along the way that either help or hinder them.
Well, it could be a really strange and magical plot. Maybe Harry has some sort of time - travel or magical transformation that makes him Fleur's mother in an alternate reality. It could involve a lot of confusion as characters try to understand this new relationship dynamic.